%I A106174
%S A106174 0,1,4,23,180,1777,21144,294239,4686680,84066001,1676633340,36801867479,
%T A106174 881568186156,22883970972577,639869619046000,19173204600407423,
%U A106174 612902677593991536,20819517833595304801,748889739331836981300
%N A106174 a(n) = 2*n*a(n-1)-a(n-2).
%C A106174 Bessel recurance at x=1: J[x,n]=(2*n/x)*J[x,n-1]-J[x,n-2].
%D A106174 Abramowitz and Stegun, Handbook of Mathematical Functions,9th printing,
               1972, page 385
%H A106174 M. Abramowitz and I. A. Stegun, eds., <a href="http://www.nrbook.com/
               abramowitz_and_stegun/">Handbook of Mathematical Functions</a>, National 
               Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 
               [alternative scanned copy].
%t A106174 F[0] = 0; F[1] = 1; F[n_] := F[n] = 2*n*F[n - 1] - F[n - 2] a = Table[F[n], 
               {n, 0, 25}]
%Y A106174 Sequence in context: A067545 A004041 A089465 this_sequence A056814 A058863 
               A108953
%Y A106174 Adjacent sequences: A106171 A106172 A106173 this_sequence A106175 A106176 
               A106177
%K A106174 nonn
%O A106174 0,3
%A A106174 Roger Bagula (rlbagulatftn(AT)yahoo.com), Mar 14 2006